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|  | This version of this document is no longer maintained. For the latest documentation, see http://www.qnx.com/developers/docs. | 
Decrement the hold count
int PtUpdate( void );
ph
This function decrements the hold count, which was previously incremented by a call to PtHold(). When the count reaches 0, the Photon libraries repair any damaged widgets.
|  | This function is the same as PtRelease(). | 
The current hold count, or -1 if an error occurred.
Photon
| Safety: | |
|---|---|
| Interrupt handler | No | 
| Signal handler | No | 
| Thread | No | 
PtContainerHold(), PtContainerRelease(), PtFlush(), PtHold(), PtModalStart(), PtRelease()
"Delaying and forcing updates to the display" in the Working with Code chapter of the Photon Programmer's Guide
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